apps/app_lifetime_monitor.cc

   1 // Copyright 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "apps/app_lifetime_monitor.h"
   6
   7 #include "apps/shell_window.h"
   8 #include "chrome/browser/chrome_notification_types.h"
   9 #include "chrome/browser/extensions/extension_host.h"
  10 #include "chrome/common/extensions/extension.h"
  11 #include "content/public/browser/notification_details.h"
  12 #include "content/public/browser/notification_service.h"
  13
  14 namespace apps {
  15
  16 using extensions::Extension;
  17 using extensions::ExtensionHost;
  18
  19 AppLifetimeMonitor::AppLifetimeMonitor(Profile* profile)
  20     : profile_(profile) {
  21   registrar_.Add(
  22       this, chrome::NOTIFICATION_EXTENSION_HOST_DID_STOP_LOADING,
  23       content::NotificationService::AllSources());
  24   registrar_.Add(
  25       this, chrome::NOTIFICATION_EXTENSION_HOST_DESTROYED,
  26       content::NotificationService::AllSources());
  27   registrar_.Add(
  28       this, chrome::NOTIFICATION_APP_TERMINATING,
  29       content::NotificationService::AllSources());
  30
  31   ShellWindowRegistry* shell_window_registry =
  32       ShellWindowRegistry::Factory::GetForProfile(
  33           profile_, false /* create */);
  34   DCHECK(shell_window_registry);
  35   shell_window_registry->AddObserver(this);
  36 }
  37
  38 AppLifetimeMonitor::~AppLifetimeMonitor() {}
  39
  40 void AppLifetimeMonitor::AddObserver(Observer* observer) {
  41   observers_.AddObserver(observer);
  42 }
  43
  44 void AppLifetimeMonitor::RemoveObserver(Observer* observer) {
  45   observers_.RemoveObserver(observer);
  46 }
  47
  48 void AppLifetimeMonitor::Observe(int type,
  49                                 const content::NotificationSource& source,
  50                                 const content::NotificationDetails& details) {
  51   switch (type) {
  52     case chrome::NOTIFICATION_EXTENSION_HOST_DID_STOP_LOADING: {
  53       ExtensionHost* host = content::Details<ExtensionHost>(details).ptr();
  54       const Extension* extension = host->extension();
  55       if (!extension || !extension->is_platform_app())
  56         return;
  57
  58       NotifyAppStart(extension->id());
  59       break;
  60     }
  61
  62     case chrome::NOTIFICATION_EXTENSION_HOST_DESTROYED: {
  63       ExtensionHost* host = content::Details<ExtensionHost>(details).ptr();
  64       const Extension* extension = host->extension();
  65       if (!extension || !extension->is_platform_app())
  66         return;
  67
  68       NotifyAppStop(extension->id());
  69       break;
  70     }
  71
  72     case chrome::NOTIFICATION_APP_TERMINATING: {
  73       NotifyChromeTerminating();
  74       break;
  75     }
  76   }
  77 }
  78
  79 void AppLifetimeMonitor::OnShellWindowAdded(ShellWindow* shell_window) {
  80   if (shell_window->window_type() != ShellWindow::WINDOW_TYPE_DEFAULT)
  81     return;
  82
  83   ShellWindowRegistry::ShellWindowList windows =
  84       ShellWindowRegistry::Get(shell_window->profile())->
  85           GetShellWindowsForApp(shell_window->extension_id());
  86   if (windows.size() == 1)
  87     NotifyAppActivated(shell_window->extension_id());
  88 }
  89
  90 void AppLifetimeMonitor::OnShellWindowIconChanged(ShellWindow* shell_window) {}
  91
  92 void AppLifetimeMonitor::OnShellWindowRemoved(ShellWindow* shell_window) {
  93   ShellWindowRegistry::ShellWindowList windows =
  94       ShellWindowRegistry::Get(shell_window->profile())->
  95           GetShellWindowsForApp(shell_window->extension_id());
  96   if (windows.empty())
  97     NotifyAppDeactivated(shell_window->extension_id());
  98 }
  99
 100 void AppLifetimeMonitor::Shutdown() {
 101   ShellWindowRegistry* shell_window_registry =
 102       ShellWindowRegistry::Factory::GetForProfile(
 103           profile_, false /* create */);
 104   if (shell_window_registry)
 105     shell_window_registry->RemoveObserver(this);
 106 }
 107
 108 void AppLifetimeMonitor::NotifyAppStart(const std::string& app_id) {
 109   FOR_EACH_OBSERVER(Observer, observers_, OnAppStart(profile_, app_id));
 110 }
 111
 112 void AppLifetimeMonitor::NotifyAppActivated(const std::string& app_id) {
 113   FOR_EACH_OBSERVER(Observer, observers_, OnAppActivated(profile_, app_id));
 114 }
 115
 116 void AppLifetimeMonitor::NotifyAppDeactivated(const std::string& app_id) {
 117   FOR_EACH_OBSERVER(Observer, observers_, OnAppDeactivated(profile_, app_id));
 118 }
 119
 120 void AppLifetimeMonitor::NotifyAppStop(const std::string& app_id) {
 121   FOR_EACH_OBSERVER(Observer, observers_, OnAppStop(profile_, app_id));
 122 }
 123
 124 void AppLifetimeMonitor::NotifyChromeTerminating() {
 125   FOR_EACH_OBSERVER(Observer, observers_, OnChromeTerminating());
 126 }
 127
 128 }  // namespace apps